I now have the slow spinning cinematic #cyberpunk fan via #SimpleFOC - about 50rpm looks good.

(This is for my bar at #Neotropolis)

Picture of an oscilloscope multimeter showing a very noisy PWM signal. behind is the cage of a fan, in front is the fan control panel

Brushless motor with a green PCB mounted on the front. 3 power driver ICs are visible in the foreground, clearly potted on some epoxy or similar coating.

I decided to be properly cyberpunk, my bar for Neotropolis needs exhaust fans on the outside. To be cinematic, the fan should turn pointlessly slow.

I bought a fan with a speed controller. It seem to use 5V PWM. Sending my own PWM, ~8% is the lowest speed. Below […]

[Original post on leds.social]

Motors Make the Best Knobs With SimpleFOC The worst thing about a volume knob is that, having connected it to a computer, it might be wrong: if you’ve manually altered the volume settings somewhere else, the knob’s …read more